I travelled to work by bus today and thought I'd use the time to call my grandmother on my mobile. I work full time and am a single parent so finding the time to chat on the phone can be tricky. We talked for 20 mins or so, mainly about my dc. As I was getting off, an elderly couple confronted me quite nastily to tell me how rude I was and how disgusting it was of me to "force the whole top deck to listen to my conversation" and that I should "think twice before getting that thing out". I know other people's public conversations can be really annoying but I didn't raise my voice or swear or speak inappropriately. I think they were the rude ones! WIBU or were they?